All Slack Reviews
1-25 of 20,685 Reviews
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Justin
Information Technology and Services, 201 - 500 employees
Used more than 2 years
OVERALL RATING:
4
Reviewed November 2021
It can do everything, but sometimes you don't want it to
Frankline
Verified reviewer
Banking, 10,000+ employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
4
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
4
Reviewed October 2020
PERFECT BRIDGE BETWEEN AGENCY AND WORKERS
Slack qualifies to be the best collaboration tool of our generation with users navigating the app with quite a lot of ease. The experience at large is very positive and with such competitive prices, indeed there lies infinite potential with slack. It offers several intergrations iclusive of outlook and zoom among other essential plugins.
PROSAs a messenger app, the basic functions enabling communications are on a perfect edge with a simple, precise interface very easy to navigate. The search option comes in as a plus as you are able to trace your target messaage on a long thread with simple typing of words on the search bar. With slack, we are able to share files with quite a lot of ease and now with the IRC style, we can separate the conversation threads in the presence of multiple members in a team to set up off-topic discussions.
CONSWhen sharing your screen with another team or individual, you have to go back to the initial chat to send a message, I would prefer this being done from the same UI of the screen-share. Also the limitation to the number of users attending a video conference does not confer with large organisations such as ours.
Reasons for switching to Slack
Inavailability of notification alerts for meetings made it unreliable.
Ronald
Transportation/Trucking/Railroad, 201-500 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed May 2024
Slack is amazing!In the office or on the go,Stay connected with Slack
Client and team communication is much easier with Slack,we are able to keep all our teams and departments on the same page.
PROSI like that Slack eliminated all the other forms of communication I've used in the past at the office,chatter,email,text and Google messenger.It is easy to use and set up with or without any technical expertise one can use it.
CONSNothing in particular to state as a deslike Slack just works wow.
Christopher
Verified reviewer
Research, 11-50 employees
Used daily for more than 2 years
OVERALL RATING:
3
EASE OF USE
4
VALUE FOR MONEY
1
CUSTOMER SUPPORT
2
FUNCTIONALITY
2
Reviewed April 2023
Not bad for small groups, horrible for large groups, free plan is now crippled
Only using Slack with external teams that use them. We no longer use it with our internal teams. Their confusing threaded views is really their downfall. There are other alternatives out there that do a much better job.
PROSSlack has a very nice, slick interface. When the workspace is not busy, it's very easy to see all the messages and figure out what's relevant for you. Very easy to setup new workspaces and channels. And basically, the key reason why we use Slack is because almost everyone is using it.
CONSTheir free plan is now crippled. Only 90 days of retention. On a number of free workspaces, I wanted to refer back to some info which I no longer can find. Very frustrating. Slack also implements threaded conversations as a "tack-on" feature. Not everyone uses this feature and it just causes more and more user confusion, especially in large workspaces where many messages are mixed into the main channel as well as in threads. Their threads/mentions&reactions views which are supposed to help you filter out things not relevant for you are huge messes. Their pricing plans are also very expensive.
Reason for choosing Slack
We're no longer using Slack internally. Only for external communication with teams that insist on using it. MS Teams offers better integration with their Office suite. Zulip offers superior threaded conversations and formatting at a much more reasonable cost.
Matt
Utilities, 51-200 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
4
FUNCTIONALITY
5
Reviewed February 2024
Slack helps Pickup the Slack
I like using Slack for internal team communications as it is simple and easy to use.
PROSWhat I like most about Slack is the ease of use and how simple/straight forward it is. I'm able open the application and connect to and talk with my teammates in real-time.
CONSHonestly, there is not much that I can say negatively about Slack because it just works. I'm able to accomplish my task with no problems
Reason for choosing Slack
It was free to setup and implement for our business and it was easy to do so.
Joy
Management Consulting, 11-50 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed April 2024
Slack at ASL
Business instant messaging and employee engagement.
PROSI like how Slack keep updating, the recent update (video conferencing) is what I am really enjoying since I reduce the hassle for integrating with external web conferencing apps.
CONSEver since I started using Slack, it has never disappointed.
Nsereko
Transportation/Trucking/Railroad, 201-500 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed May 2024
Real-time Support Specialist
My overall experience is that am mind blown with Slack real-time chats.
PROSThe real-time live chats that are easy to send and have instant feedbacks.
CONSIt has no disadvantages that are affecting me.
Aloice
Information Technology and Services, 201-500 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed May 2024
Slack Connecting People Together
Incredible because it connects me with people virtually.
PROSSlack connects me with my friends and family through video calls.
CONSSlack does not have any problems, it is a fine platform.
Lana
Accounting, 1,001-5,000 employees
Used daily for less than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
4
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed January 2024
good communicator
I use to slack daily. it helps me for work productively.
PROSI love slack. it helps me for hard-working. Slack is easy to use, also it is so comfortable for chatting
CONSI don't like slack, when the program is working so slowly.
Boris
Internet, 11-50 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
FUNCTIONALITY
5
Reviewed April 2024
Reliable communication tool
Slack is a very valuable tool for our company to coordinate internal projects, team alignment and company communication in hybrid work environment.
CONSIt could improve file management and automation.
Liam
Hospitality, 11-50 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
4
VALUE FOR MONEY
5
CUSTOMER SUPPORT
3
FUNCTIONALITY
4
Reviewed April 2024
Easy setup for team communication
Clever and intuitive, allows me to engage with team members with a friendly experience.
CONSNot a lot to say here, except maybe more guides of how to use the tool.
Rono
Verified reviewer
Computer Software, 1 employee
Used weekly for less than 6 months
OVERALL RATING:
4
EASE OF USE
4
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed April 2024
Slack is surely the king of work related updates, there's no better app.
So far Slack has lived up to its name, a proper communication software.
PROSI love how related work communities are grouped in channels. this ensures fast and organised communication.
CONSI dislike the way the slackbot removes members of a channel automatically.
Anonymous
2-10 employees
Used daily for less than 12 months
OVERALL RATING:
5
EASE OF USE
4
VALUE FOR MONEY
4
FUNCTIONALITY
4
Reviewed September 2019
Google Hangouts Replacement, Saved us from Teams
I actually enjoy Slack. It is fun to use, and I like much more than sending an email.
PROSSlack really allows us to communicate effectively based on group or subject. We can communicate directly in the General chat, directly, or in any number of specialized group channels. Each team has their own channel, and if needed, that channel can be locked to prevent other teams from entering. Most are open channels that allow for any of our teams to come in and converse on the subject titled. One our favorite things to use are external apps. I love that Slack will pop up an upcoming appointment or if we need a meeting in say Zoom, I can just type /zoom and it will generate a Zoom link and we can all join in. We are on the free tier, so with the higher level tier, you can get conferencing and a wealth of other features added in. The free level serves us very well. We use email integration also, so important emails and even things like weather alerts pop up as a Slack notification. It is really a great service.
CONSCan be confusing to use if you are not used to chat systems such as Hangouts or WhatsApp though. The idea of a separate room, or Group chat, confuses some, but once they see how things work, it is a non-issue.
Reason for choosing Slack
Microsoft Teams is a poor implementation of what Slack is. It is a burden to use. The layout of the Teams application was awful and the channel layouts were hard to use. It was free to use also, but we did not want to deal with that headache. I think that if Teams did not come with O365, people would not use it. It is awful. Slack is designed so much better overall.
Reasons for switching to Slack
HATED Hangouts first off, but then the long term decision to shutdown hangouts for non-business users was the final nail. We refused to switch to Duo, which was also killed off.
Luis Daniel
Verified reviewer
Computer Software, 11-50 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
4
VALUE FOR MONEY
5
CUSTOMER SUPPORT
4
FUNCTIONALITY
4
Reviewed May 2019
A great team communication tool
Slack is honestly the best tool for team collaboration. You can communicate via voice or text with your coworker or friends from the browser, desktop or phone and it's reliable a lot. The messages are there and so are the files shared. Also same with the chat rooms.
PROSI like Slack. I have been using it for aprox 4 years now. It's simple and it get's the job done. You can add extensions like JIRA, Google Drive, DropBox and so on. Basically slack you can have different rooms for different teams (you can manage the members per room or invite) and you can also have private chat conversations with other people. It's basically a chat server for your company or organization. The mobile app is awesome, the desktop app is fine and you can also use Slack on the browser. The free tier is good if you have a small team, now if you message a lot there's like a 10,000 message limit for the history so if you want to get the best deal, you'll need to pay. Same for the file sharing, there's a limit but it works super good.
CONSHonestly Slack is great, but with the time, it's become stagnant. A lot of other platforms are providing features that are more robust and free. For instance, Discord, even if it is for gaming, it does everything Slack does and better. Even the desktop sharing is better. I wish Slack just kind of moved out of the stagnant position they are right now and innovate a bit more or refresh their app, but hopefully they don't break it, because it works fine as well.
Reason for choosing Slack
I initially started with it, before Discord even got better, the thing is, we are so integrated with Slack at the moment, we wish Discord could just add extensions but they have bots. so they're almost there.
Heather
Real Estate, 1,001-5,000 employees
Used daily for less than 2 years
OVERALL RATING:
5
EASE OF USE
4
FUNCTIONALITY
4
Reviewed November 2019
Connecting made easy
I have used many messaging platforms in my professional career and for me, Slack takes the cake! It is really modern and the features are very easy to use. I also like how Slack manages new feature release which you can always tell us based off of recent user feedback. Slack is extremely intuitive and my team team (even those who prefer to communicate less ) enjoy using it.
PROSSlack is great for collaborating and communicating with your immediate team and across multi functional teams as well. Creating channels that are topic specific such as DevOps or functional area (product) specific allows people from across the organization to post questions, comments, share docs (slack has a larger file capacity that our email server), and subscribe to certain posts such as issue management. I really like the @all, channel, specific person functionality because of how it is linked to notification management. My other favorite slack feature is pinning certain threads which Slackbot can help remind you when new detail is published pertaining to the thread.
CONSI wish that there was a history roll up available so I could check back maybe 4 moths or so to see who I talked to. For instance, I was recently troubleshooting a technical issue and knew I had spoken with someone before to resolve the same problem a few months back. However it was in a 1:1 direct message and for the life of me I could not remember their name! I wish there was some type of running history that could show me everyone I have corresponded with because there is only so much room in the section doe Direct Messages in the fixed Slack side bar/column. I also wish that I could get a daily roll up of direct message communications to my email because I like the notification I have setup for whenever a new Slack message comes accross.
Reasons for switching to Slack
Enterprise decision and my sector of work (product and technology) use Slack as the sole messaging platform where as we also have zoom for other business sectors.
Anonymous
501-1,000 employees
Used daily for less than 2 years
OVERALL RATING:
4
EASE OF USE
5
FUNCTIONALITY
4
Reviewed September 2019
Communication made easy
Slack is a very good tool with many add-ons that can help your business with communication, reminders, etc. The library of add-ons is growing. The only thing is that I wish the search was a little bit better, you often find irrelevant hits and it is a bit hard to exclude channels or people in your search.
PROSHow easy it is to use. It is easy to chat with other members in the organization, it is easy to start small chat groups, for more permanent groups you can start channels, both public and private. It has both voice calls and video calls that are fast and smooth with great quality.
CONSIt is a bit harder to cooperate with other companies, where skype is available for anyone and you can easily add any contact, in slack you need an administrator to add a quest to the workspace. a good thing is that for each paid license you have in the company you can invite 5 guests that have access to a single channel(single-channel guest). a small con is that you need to pay a license for any guest that need access to more than one channel(multi-channel guest) The search function could offer a few more options
Reasons for switching to Slack
I'm not sure why the company made this decision, but we are all glad that we did. Slack is a better tool than Skype, except when it comes to the freedom of interacting with external users that don't have slack in their company.
Aaron
Verified reviewer
Hospital & Health Care, 51-200 employees
Used daily for less than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed January 2020
Love it. Slack-ing off @ work
It has offered a more comfortable work life and the UX seems to have that as a guiding principal. It works well and has a wonderful host of API's that greatly extend functionality of the software.
PROSIt makes Microsoft Teams or whatever they call it this year obsolete. It's like an intra-office Reddit for us. Hilarious but still very productive.
CONSThat it defaults to trying to update via windows store. Which is not accesible via group policy. Forcing an manual install every time.
Reason for choosing Slack
We actually liked freshdesk for the Helpdesk portion, but slack is like our own "geocities". We each can personalize it to our taste. We are like power rangers each with a different Zord/weapon. Simply because of the API's and extensions available.
Reasons for switching to Slack
Teams us not as robust as slack and is wayyyy more "CORPORATE". Slack is like wayyyy more "MODERN". MS tried though
Nicholas
Marketing and Advertising, 51-200 employees
Used daily for more than 2 years
OVERALL RATING:
4
EASE OF USE
4
FUNCTIONALITY
4
Reviewed January 2020
Great integrations with tools
We were on Skype for Business and the features on Slack are much richer and better. Some people are using Teams, which is also a good alternative, but for some people the heavy footprint of the full Teams product was a bit too much.
PROSIt's an easy, reliable tool to use for messaging, and easily organizes teams with channels for discussion. The integrations with web hooks are also very useful for using other developer/production tools for software development. Custom slackmojis are also a fun morale booster.
CONSThe free version has a short history span, but this is understandable given it has a free version. When having a direct ad hoc conversation with multiple people (not wanting to setup a channel), it can be difficult to read the names for each conversation and distinguish one from the other. Maybe there's a way to rename the convo, but I haven't found it yet.
Reason for choosing Slack
Lighter weight, and we have some company developers who only use Linux so because there isn't a Teams for linux distribution we couldn't use it.
Reasons for switching to Slack
Deprecation
Anonymous
5,001-10,000 employees
Used daily for less than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed August 2020
Great Business Continuity Tool
It has been a great experience using Slack. It is a valuable tool and I really like how we are able to collaborate as a team and make it seem as if we are still working together in the office.
PROS1:1 Chat - Ability to have 1:1 conversations with team members. Useful when working on a project together. Team Collaboration - Ability to bring a project together and share with a team. Group Chat - Ability to have one area/space where the team collaborates, shares ideas, and works together to communicate issues. Bot Integration - Ability to integrate various tools and bots that can make the day easier. Ability to integrate to web conferencing tools like Zoom, Webex, Teams. Ability to create to-do lists, track time, etc. Manage Team - Great way to manage a team who is working remotely in various geographic locations.
CONSStill trying to work around our SSO integration - This is mostly an internal bug we are trying to work on, but it would be nice if we can make Slack to work for a single sign on experience.
Reason for choosing Slack
Slack was inexpensive and has the value of simplifying the use across our different levels of technological expertise in the company.
Reasons for switching to Slack
To streamline processes across the globe and to ensure a means of consistency across all teams.
Matthew
Retail, 2-10 employees
Used daily for less than 2 years
OVERALL RATING:
4
EASE OF USE
5
VALUE FOR MONEY
3
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed October 2020
Staying on the same page is important
Slack really helps my employees stay on the same page but only if they use it. Sometimes I need to remind them to use it. It definitely helps keep people informed of current events at the company.
PROSWhat I like most is that slack is incredibly customizable. If you can think of a thing that needs to be done in the workplace slack has an implementation of it. Keeps everyone on the same page
CONSNotifications can get out of control without setting up when you want to be notified. If you sign up for the free plan it doesn't save your conversations for more than a few months so you'll need to send any critical important data through email.
Reason for choosing Slack
We just the free version. Price reasons are why we chose slack. Although, we are considering getting the paid plan now.
Reasons for switching to Slack
Mainly because it forces people to look at situations and helps hold them accountable.
Maurice
Management Consulting, 2-10 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
4
VALUE FOR MONEY
5
FUNCTIONALITY
4
Reviewed August 2022
This App doesn't Slack
Slack presented me with a simple solution to the communications challenges that come with project and office management. I started using it initially to manage an office, while in my early years of running a small office. We could streamline communications, tag persons who needed to get into a conversation, and we used their threading features to ensure that we could manage different conversations, all at once. That beat the use of Blackberry Messenger which we had been using earlier. When Whatsapp came on the scene, and people suggested we use that, it beat it by far as well. Slack was the best at keeping us on track, and it eventually allowed us to search channels which meant that we could now go back to previous discussions to help to keep track of things. Those two features sold me on the platform. I'll admit, when Microsoft 365 launched Teams, I ventured away from the hallowed halls of Slack, much to the chagrin of many. The thing is, I've passed the stage when I could stomach moving from platform to platform, login to login, bill to bill to assemble the best combination of everything. That aside, one needs to acknowledge that the Microsoft apps aren't the best in most of their fields (except Office), but they are pretty good. In this area, Slack is the best. They may have named it Slack, but they do not Slack at all.
PROSSlack is best-in class for project communications, and keeping your communications on course. They innovated in creating the platform, and while others may do well with one part or the other, they are the real macoy. All others are just trying to copy them.
CONSWhile their api opens Slack up to combine with other platforms, I really wish they had more native features.
Reason for choosing Slack
Let it be known, if you need the best communications platform for your project. Don't look further than Slack. While others may have good middle of the road features, Slack does its job the best.
Reasons for switching to Slack
Slack is just the best at what it does. Hands down.
Matt
Education Management, 501-1,000 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed December 2020
Great communication tool
We have loved it. It has become the primary (almost exclusive) means of intra-department communication for our IT team.
PROSI love pretty much everything about Slack. I love the ability to easily create new private and public channels; the ability to create conversation threads; the ability to pin comments; the huge selection of app integrations; the customizable Slackbot responses (we have had a lot of fun with this one); dark mode; the ability to quickly and easily share files with other members of the Slack workspace; the awesome Slack call feature; the ability to quickly access multiple Slack workspaces by adding them to the left sidebar; the native rich-text editor for enriching comments (including the code block option, which has been hugely useful for us); and the ease of management. We have found Slack to be a tremendously useful communication and collaboration tool for our organization.
CONSI don't have a lot of complaints about Slack. One small annoyance is the truncated "Direct messages" list on the left side. This list displays team members to whom you have recently sent a direct message. However, it would be more useful if it was just a scrolling list of ALL team members (alphabetized), maybe even with a quick search box at the top, so you could quickly send a direct message to anyone on the team, and not just those with whom you have had a recent direct message conversation. That's really it in terms of cons. It is a great tool that has become indispensable for us.
Reason for choosing Slack
It just seemed to be a much more robust solution, with a vast set of features that we love, such as the ability to tie into other applications we use. Also, the interface is much more intuitive, and communication feels more efficient.
David
Verified reviewer
Hospital & Health Care, 201-500 employees
Used daily for more than 2 years
OVERALL RATING:
5
EASE OF USE
5
VALUE FOR MONEY
5
CUSTOMER SUPPORT
5
FUNCTIONALITY
5
Reviewed July 2021
The best remote collaboration tool I have EVER used!
Slack is the easiest collaboration tool I've ever used. I am currently acting as Scrum Master for four agile teams, and it's easy to keep in touch with all of them and coordinate standups. File sharing is extremely easy
PROSSlack is a user-friendly, robust collaboration tool that allows for quick setup and access to channels both public and private. Asynchronous communication is a cinch and the Mentions and Reactions feature allows for easy access to what recent messages you have received.
CONSDue to Slacks' third party app space, there are some features that might seem to be missing at first but need to be found as a third party feature. This involves an admin or an owner having to approve the app being installed. This can sometimes be a bit of a headache on the admin end, as it requires going to obscure parts of the app to approve. It could be an easier experience.
Reason for choosing Slack
Teams lacked a lot of the features Slack has, such as custom reactions, quick calls and file uploading. We decided to stick with Slack as it offered what a more agile-friendly experience.
Reasons for switching to Slack
Yammer was too slow and "social media" like for us. We wanted a faster, easier tool for us to quickly communicate with one another.
Ilan
Verified reviewer
Graphic Design, 1 employee
Used weekly for more than 2 years
OVERALL RATING:
4
EASE OF USE
4
VALUE FOR MONEY
5
CUSTOMER SUPPORT
4
FUNCTIONALITY
4
Reviewed September 2022
Slack Review
Slack has been a go-to team meeting and chat platform at different positions and also during communal club spaces for organizations, such as the graphic design organization AIGA, which I frequent within my local design community. I haven't had any major issues with it thus far ans can easily recommend it. Being a business-focused chat space it also does not have silly loading messages like Discord which I've also used and which also worked well, but felt a bit unprofessional at times.
PROSSlack is an easy to navigate, light on hardware platform to facilitate teamwork. You won't need a top of the line computer to run it so even in remote work conditions you will reliably have it available. There are not excessive features to get lost in or particular issues finding your team meetings constantly, a code to the overall Slack channel is sufficent. As opposed to other productsused for video conferences such as Zoom, everything is built in on Slack for "one stop shopping" using the program. It allows for image uploads and other useful tools such as split channels for specific tasks like designating a set of crew members to a task in a server,
CONSThe user interface is readable but slightly bland with the entire white color scheme. It's not strictly necessary but it can be difficult to only look at that color scheme for when you use it, other programs like Discord have variability.
Reasons for switching to Slack
Time went on and companies have adapted to using other software like Slack instead of ones like Skype, as an example, in my experience.
Will
Civic & Social Organization, 11-50 employees
Used daily for more than 2 years
OVERALL RATING:
4
EASE OF USE
4
VALUE FOR MONEY
5
FUNCTIONALITY
4
Reviewed October 2018
Quick, Organized Messaging and High Functionality
Despite the time it took to get accustomed to the software and the constant teaching we have to do for new members of our team on how to best use it, I'm so glad that we switched to Slack. It works for us because we have minimal use for emails and are frequently messaging about things that require quick responses from many people. I have only used it on a team of 40+ people for part-time community organizing, not a full-time job or project, but it has reduced so much stress and greatly increased our productivity and communication. Plus, we can have separate channels just for jokes or recipes, so it adds a fun element to our work without ONE MORE EMAIL in everyone's inbox.
PROSSlack helps our team of 40+ people stay organized and on task. I'm not an early tech adopter, but I LOVE having my email inbox NOT inundated constantly with various subjects and to-dos. In fact, we never use email for our team, with the exception of occasional messages that come in from someone outside of our organization that we all need to discuss (and even then, copy and pasting it into Slack often yields better results and responses!). Slack has the level of organization (through both separate channels and also individual threads/discussions within each channel) that email lacks, with practically the ease of texting if you are using the phone app. Within the computer app, the separateness of the software from a web browser minimizes distractions while working within the app, although it does require switching back and forth between the two if additional info is needed.
CONSSlack does have a significant learning curve, especially with all of the special functions that are possible within the app; our team uses very few of the special functions because they aren't immediately intuitive and we haven't taken the time to get trained on them. Channels can get cluttered quickly if threads are not utilize properly, and it can take time to scroll back through the channel to find posts (although there is a search function). Also, it's a small thing, but we use the emoji "reaction" function regularly to post Yes/No questions, vote for approval on proposals (Thumbs up!), etc., but Slack does not currently notify posters of emoji "reactions" to their posts; they just have to go to the app to see whether anyone has responded or not.